Available on both Google Play and Apple Store, the free app allows non-native speakers to interact with a virtual assistant named ELSA, who would detect and fix their pronunciation mistakes.

Since users can choose their native languages, the app can help them reduce their accents as well. Besides Vietnamese, the app is also tailored for other accents, such as Japanese, Korean and Portuguese.

Speaking to Tuoi Tre, Tu said ELSA has been downloaded 7,000 times since it was available in December.